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/*
Utilities
Copyright (C) 2010 - 2015 Glenn Jones. All Rights Reserved.
MIT License: https://raw.github.com/glennjones/microformat-shiv/master/license.txt
*/
var Modules = (function (modules) {
modules.utils = {
/**
* is the object a string
*
* @param {Object} obj
* @return {Boolean}
*/
isString: function( obj ) {
return typeof( obj ) === 'string';
},
/**
* is the object a number
*
* @param {Object} obj
* @return {Boolean}
*/
isNumber: function( obj ) {
return !isNaN(parseFloat( obj )) && isFinite( obj );
},
/**
* is the object an array
*
* @param {Object} obj
* @return {Boolean}
*/
isArray: function( obj ) {
return obj && !( obj.propertyIsEnumerable( 'length' ) ) && typeof obj === 'object' && typeof obj.length === 'number';
},
/**
* is the object a function
*
* @param {Object} obj
* @return {Boolean}
*/
isFunction: function(obj) {
return !!(obj && obj.constructor && obj.call && obj.apply);
},
/**
* does the text start with a test string
*
* @param {String} text
* @param {String} test
* @return {Boolean}
*/
startWith: function( text, test ) {
return(text.indexOf(test) === 0);
},
/**
* removes spaces at front and back of text
*
* @param {String} text
* @return {String}
*/
trim: function( text ) {
if(text && this.isString(text)){
return (text.trim())? text.trim() : text.replace(/^\s+|\s+$/g, '');
}else{
return '';
}
},
/**
* replaces a character in text
*
* @param {String} text
* @param {Int} index
* @param {String} character
* @return {String}
*/
replaceCharAt: function( text, index, character ) {
if(text && text.length > index){
return text.substr(0, index) + character + text.substr(index+character.length);
}else{
return text;
}
},
/**
* removes whitespace, tabs and returns from start and end of text
*
* @param {String} text
* @return {String}
*/
trimWhitespace: function( text ){
if(text && text.length){
var i = text.length,
x = 0;
// turn all whitespace chars at end into spaces
while (i--) {
if(this.isOnlyWhiteSpace(text[i])){
text = this.replaceCharAt( text, i, ' ' );
}else{
break;
}
}
// turn all whitespace chars at start into spaces
i = text.length;
while (x < i) {
if(this.isOnlyWhiteSpace(text[x])){
text = this.replaceCharAt( text, i, ' ' );
}else{
break;
}
x++;
}
}
return this.trim(text);
},
/**
* does text only contain whitespace characters
*
* @param {String} text
* @return {Boolean}
*/
isOnlyWhiteSpace: function( text ){
return !(/[^\t\n\r ]/.test( text ));
},
/**
* removes whitespace from text (leaves a single space)
*
* @param {String} text
* @return {Sring}
*/
collapseWhiteSpace: function( text ){
return text.replace(/[\t\n\r ]+/g, ' ');
},
/**
* does an object have any of its own properties
*
* @param {Object} obj
* @return {Boolean}
*/
hasProperties: function( obj ) {
var key;
for(key in obj) {
if( obj.hasOwnProperty( key ) ) {
return true;
}
}
return false;
},
/**
* a sort function - to sort objects in an array by a given property
*
* @param {String} property
* @param {Boolean} reverse
* @return {Int}
*/
sortObjects: function(property, reverse) {
reverse = (reverse) ? -1 : 1;
return function (a, b) {
a = a[property];
b = b[property];
if (a < b) {
return reverse * -1;
}
if (a > b) {
return reverse * 1;
}
return 0;
};
}
};
return modules;
} (Modules || {}));
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